Make sure any sequence type works with _query.

2 files changed, 8 insertions, 2 deletions

diff --git a/pyramid/static.py b/pyramid/static.py
index 34fc3f55c..0cbb5533f 100644
--- a/pyramid/static.py
+++ b/pyramid/static.py
@@ -223,7 +223,7 @@ class QueryStringCacheBuster(Md5AssetTokenGenerator):
         if isinstance(query, dict):
             query[self.param] = token
         else:
-            kw['_query'] = query + [(self.param, token)]
+            kw['_query'] = tuple(query) + ((self.param, token),)
         return subpath, kw
 
 
diff --git a/pyramid/tests/test_static.py b/pyramid/tests/test_static.py
index aca5c4bbd..134bea25e 100644
--- a/pyramid/tests/test_static.py
+++ b/pyramid/tests/test_static.py
@@ -471,7 +471,13 @@ class TestQueryStringCacheBuster(unittest.TestCase):
         fut = self._makeOne().pregenerate
         self.assertEqual(
             fut('foo', ('bar',), {'_query': [('a', 'b')]}),
-            (('bar',), {'_query': [('a', 'b'), ('x', 'foo')]}))
+            (('bar',), {'_query': (('a', 'b'), ('x', 'foo'))}))
+
+    def test_pregenerate_query_is_tuple_of_tuples(self):
+        fut = self._makeOne().pregenerate
+        self.assertEqual(
+            fut('foo', ('bar',), {'_query': (('a', 'b'),)}),
+            (('bar',), {'_query': (('a', 'b'), ('x', 'foo'))}))
 
 class DummyContext:
     pass